Process for sterilizing and preserving cotton-seed.



mairnnsra'rns PATE @iwmilo EDWARD ROBERTSON BARROW, "OF MEMPHIS,TENNESSEE, AS$IGNOR T0 BARROW COTTONSEED PRESERVER COMPANY, OF MEMPHIS,TENNESSEE, A CORPORATION OF TENNESSEE.

PROCESS FOR STERIIIZINGAND FEE-SERVING COTTON-SEED.

No Drawing.

To all whom it may concern! Be it known that I, EDWARD ROBERTSON Barrow,a citizen of the United States, residing at Memphisfln the county ofShelby and State of Tennessee, have invented certain new and usefulImprovements in Processes for sterilizing and Preserving Cotton- Seed,(Case B and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My present invention relates to an improved method of treating cottonseed in order to prevent the same from deterioration due to the organicchanges incident to heating or sprouting, or both; and it consists incertain improvements over the method shown in my Patent No. 1,119,672,granted December 1, 1914-, and entitled Process for sterilizing andpreserving cotton seed.

It is well known that cotton seed varies largely from year to year inthe quantity of water contained therein. When it contains excessivemoisture, if it is subjected to external heat, or develops heat fromgermination, it tends to sprout, causing organic changes in the kernelwhich largely impair the value of the cotton seed as an oil producer,and as an eatable product for animals. This tendency of the seed to heatup and sprout has rendered it necessary hith erto to work up the seed aspromptly as practicable in the oil mills, and is largely prohibitive ofthe shipment of the seed in bulk in sea-going vessels, where thetemperature is always more or less high in the cargo space of thevessel.

As stated in my patent aforesaid, I have found that, by treating cottonseed, with the hulls on, with ordinary sodium. chlorid, the germinatingpower of the seed is destroyed and the seed is maintained for a longperiods'in a sound and unimpaired con dition, as far as the subsequentmanufacture of the seed into cotton seed oil and food products foranimals is concerned; but, of course, the seed is sterilized,

I have found that by mixing with the sodium chlorid, as described in mypatent aforesaid, a small percentage of starch and I magnesium carbonatethe etficiency of the salt for the purpose stated is materiallySpecification of Letters Patent.

Patented Sept. as, raw,

App lication filed October 7. 1914. Serial No. 865,578.

enhanced, Sodium chlorid having the property of absorbing moisture fromthe air, that is being hygroscopic in nature, I have found that theetliciencv of my process of preserving and sterilizing is enhanced byhaving the salt perfectly dry when ap plying same to the seed, andaccomplish this end by the addition of small quantities of magnesiumcarbonate and dry starch; In this manner the property of the salt toabsorb moisture and become hard or caked is overcome by the presence ofthese added ingredients and the efficiency of my process is increased byhaving the salt in condition to absorb the maximum amount of moisturefrom the cotton seed to which it may be applied.

The salt, starch and magnesium carbonate are preferably intimately mixedand then, while in the pulverized dry form, thoroughly stirred into theseed, tending to coat the same with the mixture. The moisture of theseed and the air coming in contact with the sodium chlorid mixture abovedescribed will tend to form a preserving medium for the seed which,penetrating through the hulls, will destroy the germinating power of theseed.

In practice, when using the composition in the dry form, I use acomposition of about 96% sodium chlorid, about 2% of starch and about 2%of magnesium carbonate, the prod-- nets to be intimately mixed togetherand then to be mixed into the cotton seed, but the proportions of theseingredients may be varied at will provided, however, there isalways anexcess of salt present.

The minute quantity of salt that passes through the hulls and permeatesthe kernel will not be sufficient to impair the edibility of the cottonseed meal after the oil has been extracted, but, on the contrary, itwould render the cotton seed meal more palatable as stock food; whilethe salt would not in any way aflect the chemical nature of the cottonseed oil and could be readily washed out.

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pod-f a pea, and may be as such more easilyseparated from the'kernelthan in the process now in use, where the, seed comes from the field,without any preliminary treatment.

The seed mixed with the powdered composition dry may be stored away foran in definite period.

By the herein described process, the seed isplaced in such .a conditionthat it will keep indefinitely, and the operation of millingthe samemaybe carried on through a series of months, or throughout the entireyear,if desired; whereas under present con- .ditions the seed must behurried to the mill and promptly milled, as the milling season lastsonly about four months, due to the probable deterioration of the seed ifit be kept longer.

It will be obviousthat the seed may be treated with the composition atthe gin after the staple cotton has been removed therefrom, and eitherbefore or after the seed has been delinted; and that the seed may beretained at the gin after such treatment, or may be stored in anyconvenient warehouse at the mill, or elsewhere;

Having thus described my invention, what I claim anddesire to secure byLetters Patent of the United States is v 1. The herein described processof treating cottonseed to sterilize and preserve the same, whichconsists in treating the same with small quantities of sodium chlorid,starch and magnesium carbonate, substantially'asdescribed. I i

2. The herein described process of treating cotton seed to sterilize andpreserve the same, which consists in treating same with about 5% by'weight ofsodium chlorid which would contain about 2%-by weight ofstarchand 2% by weight of magnesium carbonate, substantially as described.

3. The process of'treating cotton seed to sterilize and preserve thesame, which consists in mixing finely divided chlorid of sodium, starchand magnesium carbonate with the cottonseed having the hulls on,substantially as described.

i. The process of treating cotton seed to sterilize and preserve thesame, which consists in mixing about 5% byweight offinely dividedchlorid of sodium, containing about 2%by u eight of starch, and 2% byWeight of gmagnesimn carbonate with the cotton seed having the hulls on,substantially as de scribed. l

In testimony whereof, I affix my signa- 1 ture, in presence of twowitnesses.

EDWARD ROBERTSON maaow.

Witnesses: r

It. P. CARY, RAYMOND FRANKEY.

Copies of this patent may be obtained for five cents each, by addressincommissioner of Patents,

' Washington, I). c." 7 a

